3980xpi Users Manual - Data I/O Corporation

Translation Formats
A paper tape generated by a programmer contains a 5-byte, arrow-shaped
header followed by a null and a 4-nibble byte count. The start code, an 8-bit
rubout, follows the byte count. The end of data is signaled by two nulls and a
2-byte sumcheck of the data field. Refer to Figure 5-4.
If the data output has a byte count GREATER than or equal to 64K, an
alternate arrow-shaped header is used. This alternate header (shown below) is
followed by an 8-nibble byte count, sandwiched between a null and a rubout.
The byte count shown here is 40000H (256K decimal). If the byte count is
LESS than 64K, the regular arrowhead is used instead. Data that is input using
Formatted Binary format will accept either version of this format.
Figure 5-4. Formatted Binary Format (example)
DATA
RUBOUT (FF)
In addition, a third variation of this binary format is accepted on download.
This variation does not have an arrowhead and is accepted only on input. The
rubout begins the format and is immediately followed by the data. There is no
byte count or sumcheck.
Format 10 does not function properly unless you select NO parity and 8-bit
data.
DEC Binary Format, Code 11
8 NIBBLE BYTE COUNT
NULL (00)
ARROW
HEAD
Data transmission in the DEC Binary format is a stream of 8-bit data words
with no control characters except the start code. The start code is one null
preceded by at least one rubout. The DEC Binary format does not have
addresses.
Formats 11 does not function properly unless you select NO parity and 8-bit
data.
3980xpi/3980/3900/2900 User Manual 5-7
08
6B
3E
1C
08
00
00
00
00
04
00
00
00
0483-2